Using newly developed consistent methodology for thermodynamic studies of Fe2+ containing compounds by high temperature oxide melt solution calorimetry, the surface energies of hydrated nanophase magnetite - maghemite, titanomagnetite and titanomaghemite solid solutions were obtained. They are similar for both end-members and solid solutions and relatively small as for other spinels studied previously. The mixing properties of the solid solution as well as the enthalpies of formation of the end-members are investigated.  The results help explain the widespread occurrence of fine grained iron bearing spinels in the near surface environment.

Energetics of iron spinels at bulk and nanoscale

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.